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M. E. PRiMB Sg TIMER. m ucmou FILED EEB. 1 a. m1.- RENEWED'JUNE 21.1919.

Patented Dec. 30,1919

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.l! flllfl/ I BY wn'Nssss Afton .M. E. PRIMBS. TIMER. APPLICAT IQN FILED FEB, 13,19ll- RENEWED JUNE 27,1919 1,326,781 Patented Dec; 30,1919

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INVENTOR WITNESSES WWQEQWW Q BY H W W ATTORNEY M. E. PRIMBS.

Patented Dec. Sin 1910.

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' INVENTORY WITNESSES ATTO R N EY UNITED STATES PATENT OFFICE.

E. rams, 0F PITTSBURGH. PENNSYLVANIA, ASSIGNOR OF ONE-FOURTH 7 TO CHARLES W. LAMQPUS OF PITTSBURGH PENNSYLVA NIA.-

TIMER.

Application filed February 13. 1917. Serial No. 148,373. Renewed June 27. 1919. Serial 'N0. 307,256.

T 0 all whom it may concern:

Be it known that I, MAXILLIAM E. Pnnrns, a citizen of the United States residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented new' and useful Improvements in Timers, of which fication.

This invention relates to a timer and more particularly to the construction of a timer to replace the well known Ford timer and has for its primary object to pro-' vide a timer having a number of improved features over the Ford timer.

An object of the invention is the provision of a timer, the commutator of. which may be readily replaced with a minimum amount of expense and by an inexperienced rson.

Another object of the invention is the novel manner of construction and assembling the parts so that a relatively small portion of the device will be thrown awa when the commutator is worn out.- Another feature of the invention is the novel manner of permanently connecting the lead wires to a permanent member Within the timer and the simple manner of associatingthe member with the commutator.

Besides the above my invention is distinguished in the manner of associating the cap with the commutator and casing so that the segments of the commutator will be properly associated with the contacts of the ring and upon removal of one of the pins the driver is capable of completely rendering the timer useless.

A further feature of my invention is the novel manner of housing the lead wires so that the same will not be subjected to wear or the action of oils.

\Vith these andother objects in view the invention will be better understood from the following detail description taken in connection with the accompanying1drawings wherein Figure 1 is a side elevation of an end plate of an engine showing my invention applied thereto.

Fig. 2 is a vertical sectional view thereof.

Fig. 3 is a front elevation of the timer with the cap removed.

Figs. 4 and 5 are detail side elevations of the rings. 4 I 1 Figs. 6 and 7 are sectional views through them the ,following is a speciperspective view of. a contact.

Patented neeeo, 1919. l

Fig. 12-is a detail sectional view of the upper end of the extension.

My invention consists of a casing 1 shown iii-this particular instance of an annular shape with a tangentlally arranged hollow extension 2 communicatingwith the lnterlor of the casing. The casing is provided with an inwardly extending annular flange 3.

Slidably mounted within the casing so as to move toward and away from the flange 3 to form an annular recess 4 is a ring 5 also provided with anannular flange 6 having bearing on the flange 3.

Supportedby the ring 5 are contacts 7 having extensions 8 projecting through the flange so as to be permanently attached to the ends of the lead wires as indicated .at 9.

V It is of courseto be understood that there are as many contacts as there are engine cylinders and each contact is secured to a lead wire although only one is shown in Y i Y Slidably' supported within the ring 5 is Fig. 5.

a second ring '10. The exact construction of v the ring is such that the ring proper slides within the flange 6 while an annular flange 11 slides within the ring proper 5. Thus it will beseen that the. sliding movement of the rings toward each'other is limited. The

- ring 10 and the segments 12 form the commutator of the invention and each segment is provided with an extension 13 passing through the flange 11 and arranged to act} against a contact 7. n

As far as I have- 'proceeded it will beseen that the connections of the lead wires and contacts are permanent and a quick detachable connection will be accomplished between the contacts and segments. When the commutator is worn out it is only necessary to remove the ring 10 and-replace by a new' 7 ring. By this actionthe connections of the lead wires are not subjected to a. strain.

For the purpose of partlyrotating the ring 10 within the ring 5 for advancing and retarding the spark and also'to insure the proper engagement betwee'n the segments and contacts I pr vide a ca. .14 of the usual shape'now used upon a or The .d1f-' my ca s that. :m cap is detachablfy ference' between the cap on the Ford and operating with thelatter to forni a recess 'for the reception of the ends of the lead" sociat d with-the other elements the timer by lugs 15 that enter correspondingly shapedopenings'in 'thering' 1Q. The cap controlling devicell'; i

has secured thereto'a control arm 16 of the and with relationto thev engaging action be tween'thesegments and contacts, it will be where;

I seen that the pins 18 and 19 will positively prevent complete disengagement between the segments and; contacts. '.Shou1d it become-f advisable in practice the pin :19 can be 'reinovabl'y associatedwith the casing so that 'a .we'lI inf'orined driver under certain conditions can remove the pin l9-and by operating'th'e control device at the proper time break connection between the segments and contacts and thus render, the ignition i n active.

. Referringto Fig. 12015 the drawing 'it will be'seen that the extension 2 has its" end formed 'intoa head 20' in which is. seated a: terminal block 21' including sockets '22 that'are adapted to be connected] to the lead; wires and to haveja; detachable connection with the plugs 23 forming thetermi nals for the ignition wires.

To complete my invention I use thespring clamp 24: for clamping the various parts together. Upon the] removal of the clamp QLthe various parts of my invention can lie quickly and readily disconnected.

It is to be'underst-ood that while all of the several parts of my improved timerhave' "special cooperation with-one another and together constitute a' particularly effective mechanism for the purpose in View certain of these features may me applied in other relat' ns and I-therei'ore. desire-to cover the in the general organization shown or'else- It 'is to b'e'understood that thestructural embodiment of" the invention as a Whole and itsvarious features as shown is merely 1llustrat1ve and 'not restrictive-since 'I am fwell; aware that many ot'lthe'de'tails of'construction can be widely varied without de-, parting from'the spirit of the invention.- I therefore donot desire to belim-ited in these particulars or in, any others except as set forth in the appended claims.-

That'I claim is 1'. Ina timer a cylindrical casinghaving a tangentially arranged hollow extension lead wires arranged in the extension, a ring slida-bly mounted within the casing and'co- Pins '18 and 'l9qare mounted in thecasing in thefpath offmovement of the arml6 so as to ,limit the rotatable action of the cap 'ing', an annular flange therein, a ring 10- said 'fian e to "d wvires, contacts supported by'the ringiand.

permanently connected tojthe l ad i ndy a having a slidably detachable connection wit the second ring, a control arm projecting therefrom and means'carried by the casing and arranged in the pathof'movement-of I the arm for limitng the rotatable movement of the cap.

, A timer embodyinga c'vlindrical, casbated within; saii casing and spaced from .80 fine an annular chamber,

conductor plates e tending through openings 3 in therlng into said. chamber, lead wires I extending into said chamber for connection wlth the conductor plates, :1 second, ring I within the first mentioned ring, commutator segments mounted within said'second ring for limited rotary movement and bearing against-the conductor plates and a .-rotary driven element adapted to successively engage the commutator. segments.

3. A timer embodyinga cylindrical ca's-n ing,"-a'n annular flange therein, a ring lo-' said flange to define an annularchamber, conductor plates exteudmg through openings' in;saidjring' into said chamber, lead wires also extending into said chamber for cated within said casing and spaced from the second mentioned ring and extendj'ng j th'rough openings in the latter for contact with the conductor plates and a rotary drivenelement adapted to successively en-. gage the commutator plates. I

A'timer'embodying a cylindrical casing, an annular flange thereinga ring 10- dated within said casing and spaced from said flange to define an annular chamber, conductor plates extending through openings in said ring into said chamber, 'ead wires also extending into said chamber for connection to the conductor plates, a sec- 0nd ring mounted within the first mentioned ring and segmental commutator segments located upon'the inner periphery of the second mentioned ring, radially extending arms carried by said commutator segments, said arms extending'tln'ough openings-in the last mentioned ring for wip ng ei'igagemcngwith the conductor plates and a '-ro'tar v riven element adapted to successively engage the commutator segments.

' In testimony whereof I afiixmy signature.

MAXILLIAM E. PRIMBS. 

